Description:Helicopter aerial footage captures a massive tornado forming near Oklahoma City. This latest tornado touches down one day after a strong storm front hammered the state killing at least one person. The central United States had been bracing for another round of violent weather after tornadoes struck the region over the weekend, killing one man and injuring more than 20 people. Immediate aftermath shows houses turned to rubble. Entire neighborhoods appear to have been flattened(1:13)